Same reference but which to buy? (Reverso UT Duo)

Hi everyone,
I'm almost sure that my next watch is going to be JLC (Grande) Reverso Ultra Thin Duoface, shown in the video here:

I have a few questions for the community before I make the final decision to pull the trigger though:
1) Which would you pick given the condition, value for money, etc. of each offering?
　I buy to wear (w/o investment in mind particularly) and both are fine in terms of finances
　(although I originally intended to spend a lot less...).
　Given that it's a relatively modern watch (2015ish?) and the big price difference, is there much value in having the full set?

　Both come from reputable pre-owned shops and I went to see them both.
　Sharing some pictures, along with summary for each.

　Store A (Pictures with white background)
　・Price: 8700 USD
　・Full set
　・+4 or 5 seconds/day
　・1 year guarantee
　・Polished (confirmed by store) but seems decently done?
　・Serviced by the store
　・Store is an independent watch store with more variety in lineup

　Store B (Pictures in store)
　・Price: 7000 USD (20% cheaper!!!)
　・Watch (OEM strap and buckle are included)
　・+20s/day　*a bit concerning but might be due to lack of service?
　・NO guarantee
　・Unclear if polished but maybe not? Would love your view/insights on this!
　・Not serviced by the store and unclear if ever serviced previously.
　　Their watchmakers have opened the movement to see if it's original and everything seems to be working fine,
　　but NOT conducted a service.
　・Store is from a luxury pre-owned chain (including bags etc.) that's a public company.
　　They are having this at a special price by not putting giving the watch a proper service and thereby saving their resources

2) Is it normal for the minute hand to wiggle a little bit when changing the hour via the button?
　 Maybe I'm just paranoid but I always imagined the minute hand would be completely stationary in complications like this

3) How do you think the watch fits my wrist?
　 I have no experience with (or sense for) rectangular watches but does this seem fine in terms of sizing?
　 My wrists are on the average to slightly thick side, and I can wear watches like a Speedy (42mm with 47ish? L2L) fine

Thank you so much for your help!

JLC charges around 850 USD but I've heard places that do it as low as 350 USD.
Maybe I should consider around 500-600 USD then which would still be only a third of the price difference

Just wondering but which parts of the second one look rough to you?
I've made sure there's no dents or anything major like that but is it mainly the scratches?

Personally, I don't need my watches to be squeaky clean and would prefer an (close to) unpolished watch with some scratches over a polished one.
It sounds like both look fine in terms of the maintaining their original shape/edges to you then right?

As you correctly pointed out, the first one's service was done by the dealer, so I'm not sure how much that is worth...
They outsource servicing to a "partner" (who probably does it for cheap) and while I don't suspect any foul play, it's probably not to JLC/factory standard

Agreed that a service at JLC makes sense here.
Would you send it off right away or enjoy it for a few months first?

Also, how did watch 2 look to you in terms polishing to you?
Looks mostly fine to me but don't have trained eyes for this so...

Hi Dan,
They're both white AND black, given that it's a Reverso Duo reference, where you'll get a different dial if you flip the case around

Considering that and how they're both the same reference, what do you think about the offering on both?